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1. Compactive deformation of incoming calcareous pelagic sediments, northern Hikurangi subduction margin, New Zealand: Implications for subduction processes

   https://doi.org/10.1016/j.epsl.2023.118022  

   Wang, Maomao ; Barnes, Philip M. ; Morgan, Julia K. ; Bell, Rebecca E. ; Moore, Gregory F. ; Wang, Ming ; Fagereng, Ake ; Savage, Heather ; Gamboa, Davide ; Harris, Robert N. ; et al ( March 2023 , Earth and Planetary Science Letters)
2. Subduction Initiation With Vertical Lithospheric Heterogeneities and New Fault Formation: MAO ET AL.: SUBDUCTION INITIATION

   https://doi.org/10.1002/2017GL075389  

   Mao, Xiaolin ; Gurnis, Michael ; May, Dave A. ( November 2017 , Geophysical Research Letters)
3. Representing anisotropic subduction zones with isotropic velocity models: A characterization of the problem and some steps on a possible path forward: ANISOTROPIC SUBDUCTION, ISOTROPIC MODELS

   https://doi.org/10.1002/2016GC006507  

   Bezada, M. J. ; Faccenda, M. ; Toomey, D. R. ( August 2016 , Geochemistry, Geophysics, Geosystems)
4. SUBDUCTION COMPLEX ROCKS IN NW WASHINGTON: LINKING THE SUBDUCTION RECORD TO JURASSIC-CRETACEOUS OROGENIC EVENTS

   https://doi.org/10.1130/abs/2022CD-373949  

   Schermer, Elizabeth ; Mulcahy, Sean ; Cordova, Jeremy ; Lang, Katherine E. ( January 2022 , Geological Society of America Abstracts with Programs)
5. A subduction influence on ocean ridge basalts outside the Pacific subduction shield

   https://doi.org/10.1038/s41467-021-25027-2  

   Yang, A. Y. ; Langmuir, C. H. ; Cai, Y. ; Michael, P. ; Goldstein, S. L. ; Chen, Z. ( December 2021 , Nature Communications)

   Abstract The plate tectonic cycle produces chemically distinct mid-ocean ridge basalts and arc volcanics, with the latter enriched in elements such as Ba, Rb, Th, Sr and Pb and depleted in Nb owing to the water-rich flux from the subducted slab. Basalts from back-arc basins, with intermediate compositions, show that such a slab flux can be transported behind the volcanic front of the arc and incorporated into mantle flow. Hence it is puzzling why melts of subduction-modified mantle have rarely been recognized in mid-ocean ridge basalts. Here we report the first mid-ocean ridge basalt samples with distinct arc signatures, akin to back-arc basin basalts, from the Arctic Gakkel Ridge. A new high precision dataset for 576 Gakkel samples suggests a pervasive subduction influence in this region. This influence can also be identified in Atlantic and Indian mid-ocean ridge basalts but is nearly absent in Pacific mid-ocean ridge basalts. Such a hemispheric-scale upper mantle heterogeneity reflects subduction modification of the asthenospheric mantle which is incorporated into mantle flow, and whose geographical distribution is controlled dominantly by a “subduction shield” that has surrounded the Pacific Ocean for 180 Myr. Simple modeling suggests that a slab flux equivalent to ~13% of the output at arcs is incorporated into the convecting upper mantle. 

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